Purge Control System

1. Disconnect the purge hose from the evaporative emission (EVAP) canister and connect the the special tool (purge flow indicator) between the EVAP canister and the purge hose.
2. Before inspection and adjustment, set the vehicle in the following conditions:
- Engine coolant temperature: 80-95°C (176-203°F)
- Lights, cooling fan and accessories: OFF
- Transaxle: Neutral (A/T for P range)
3. Run the engine at idle for more than four minutes.
4. Check the purge flow amount when raising the engine speed up to approx. 3500 r/min.

Standard value: 8 cu.cm/sec (1.0 SCFH) or more

NOTE: Observe the flow indicator for a while (approx. 1 min.), because the ECM shuts off the purge flow periodically.

5. Race the engine suddenly several times and check the purge flow amount.

Standard value: 20 cu.cm/sec (2.5 SCFH) or more

6. If both values at steps 4 and 5 are less than the standard value, disconnect the vacuum hose from the EVAP canister and carry out the steps 4 and 5.
7. If both values at steps 4 and 5 are less than the standard value, check the evaporative emission purge solenoid, vacuum port and vacuum hose for clogging.
In addition, if the purge flow amount meets the standard value of step 4 or 5, the EVAP canister should be replaced.